25719863 has 16 divisors (see below), whose sum is σ = 30105600. Its totient is φ = 21759840.

The previous prime is 25719853. The next prime is 25719877. The reversal of 25719863 is 36891752.

It is a cyclic number.

It is not a de Polignac number, because 25719863 - 2¹⁰ = 25718839 is a prime.

It is a super-2 number, since 2×25719863² = 1323022705477538, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25719863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25719803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5978 + ... + 9336.

It is an arithmetic number, because the mean of its divisors is an integer number (1881600).

Almost surely, 2^25719863 is an apocalyptic number.

25719863 is a deficient number, since it is larger than the sum of its proper divisors (4385737).

25719863 is a wasteful number, since it uses less digits than its factorization.

25719863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422.

The product of its digits is 90720, while the sum is 41.

The square root of 25719863 is about 5071.4754263429. The cubic root of 25719863 is about 295.1817820527.

The spelling of 25719863 in words is "twenty-five million, seven hundred nineteen thousand, eight hundred sixty-three".